Abstract

Densities and ultrasound velocities for the binary mixtures of 1-bromobutane + benzene and 1,4-dimethylbenzene and of 1-bromopentane + cyclohexane and benzene have been measured at 308.15 K. Adiabatic compressibilities ( β ad), and Wada’s constants ( W) have also been evaluated as a function of composition. The ultrasound velocities decrease, attains a minimum and then increase with increase in mole fractions of hydrocarbons in the binary mixtures except in the case of 1-bromopentane + benzene binary mixtures where the variation is just the reverse. Dependence of adiabatic compressibilities with mole fractions of hydrocarbons is sigmoid. The non-ideal behaviour of the systems studied is explained on the basis of dipole-induced dipole interactions.

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